Paper-slitting attachment for printing-presses.



No. 668,9I5. Patented Feb. 26, l90l.

J. F. FRDMM. PAPER SLITTING ATTACHMENT FDR PRINTING PRESSES.

(Application filed Oct. 26, 1900.)

2 Sheets-Shoot l.

Inventor.

(No Nodal.)

Witnesses.

$4 Attorney.

" N0. 668,9I5. Patented Feb. 26, I90l.

J. F. FROM".

PAPER SLITTING ATTACHMENT FUR PRINTING PRESSES. (Application filed Oct.20, 1900. I

(No-Nodal.)- 2 Shoots-Shoot 2.-

Iii I! I hi Witnesses. v Ihventor.

n4 M m 2&2 Attorney.

1' NORRIS Pnzas ca Puma-L Tko wAsHmsrou n c U 11 E if PATENT OFFICE.

JOHN F. FROMM, OF ROCHESTER, NEW YORK.

SPECIFICATION forming part of Letters Patent No. 668,915, dated February26, 1901.

Application filed October 26, 1900. Serial No. 34,490. (No model.)

To aZZ whom it may concern:

Beitknown that I, JOHN F. FRoMM,of Rochester, in the county of Monroeand State of New York, have invented certain new and useful Improvementsin Sliiting Attachments for PrintingPresses; and I do hereby declare thefollowing to be a full, clear, and exact description of the same,reference being had to the drawings forming a part of this specificationand to the numerals marked thereon.

My present invention has for its object to provide an improved devicefor cutting or slitting paper which is capable of attachment to cylinderprin ting-presses in which the sheet to be printed is carried upon arotary drum or cylinder, whereby the sheet may be slit as it is fed fromthe table and delivered in the cut or severed condition after theprinting operation.

To these and other ends my invention consists in certain improvementsand combinations of parts, all as will be hereinafter fully described,and the novel features pointed out in the claims at the end of thisspecification.

In the drawings, Figure 1 illustrates a slitting device constructed inaccordance with my invention, showing its application to a cylinderprinting-press. Fig. 2 is an enlarged side elevation of the device, andFig. 3, a plan view of the attachment. Fig. 4 is a sectional view on theline 3 3 of Fig. 1. Fig. 5 is a similar view on the line 4. a of Fig. 1;and Fig. 6 is a bottom plan View of the supportingarm, showing theadjustable clamping device. Fig. '7 is a side elevation of amodification.

Similar reference-numerals in the several figures illustrate similarparts.

In the present instance I show my device applied to a cylinderprinting-press having the finding-table 1 and the impression cylinder ordrum 2, provided with the grippers 3, adapted to be operated by anysuitable means to grasp the edge of a sheet of paper fed from the tableand to carry it around with the cylinder during the printing operation.The

slitting or cutting of, the paper is performed as the sheet is drawnfrom the table by means of a suitable cutter, and in the presentconstruction of my device I have shown a cutting mechanism adapted to besupported above the cylinder- 2 and in line with the surface of thetable. The device is employed in connection with the usual stops orfingers 4, located above the cylinder and against which the edge of eachsheet is placed to insure its proper feeding to the cylinder and tocause its proper register with the printing mechanism.

Mounted upon a supporting arm or blade 10, secured, preferably, to thelower side of the table 1 and curved slightly to conform to thecircumference of the cylinder, is a rotary cutting-wheel 11, having aknife-edge and adapted to be operated as the paper is fed to thecylinder by means of a driving-wheel 12, frictionally engaging thepaper, any suitable form of driving connection being employed betweenthe cutter and the driver 12. Arranged upon t-he end of the arm or blade10 is a standard, forming a support 13 for the parts, as will bedescribed, having a very narrow base 14, undercut upon its forward edgeat and sharpened, as shown, to separate the paper after it has beensevered and to allow it to pass the support. Pivotally connected to theupper portion of the support 13 by a screw 13 is a bifurcatedsupporting-arm 14',carrying between its forward ends the cutting-wheel11, and to adjust the latter relative to the face of the arm or blade 10I provide set-screws 15 and 16, arranged upon opposite sides of thepivotal point of said arm; Arranged upon the opposite sides of the arm14 is a frame, preferably embodying the arms 17, journaled upon the axis111 of the cuttingwheel 11 and carrying at their outer ends thedriving-wheel 12, adapted to be operated by frictional engagement withthe surface of the paper as it is drawn beneath it, a small spring 18,operating at the rear ends of the frame, serving to hold the wheel inyielding engagement with the sheet, while a set-screw 19,1imiting itsmovement, serves as a means for ad justing the arms to raise or lowerthe driving-wheel to regulate the friction and accommodate paper ofvarious grades or thickness. In order to cut the paper smoothly withoutcausing it to drag as it is drawn upon the cylinder, I revolve thecutting-knife considerably faster than the speed at which the pa pertravels and in the direction in which it is moving. In the preferredform of my device I have shown gears 11 and 12 formed upon the sides ofthe cutting-wheel and drivingwheel, respectively, and arranged between.ble 1.

them to cause their rotation in the-same direction is a small-pinion20,:carried upon the frame 17, as shown particularly in Fig. 3. A smallslit or aperture 21 is provided .inthe support below the rotary knifetoallow the latter to be adjusted relative to the-face of portanttoinsurezthe proper operation-o'fzthei device and the deliveryof the sheetafter it has been severed, and While it may be modified extensively Iprefer the form shown in the sectionalyiews, Figs. 4 and 5, inwhich thesupport is comparatively flat upon its top with the rounded edges,thetlattenedportion, extending slightly beyond'the center of thedriving-wheel 12, and from said :point 'itis gradually rounded off toform an arched or crowned portion beneath the center of the knife 11,over which crowning portion the moving paperis drawn andflheld'tightlyand smoothly, preventing it from wrinkling or fulling in front of theknife. In order'to shorten the device and make it more compact, I'haveshown the driving-wheel provided with an'annular recess in its'periphery, into which the edge of the cutting-knife may operate.

The device is applicable to all printingpresses of theclass described,and'to perinitf its easy application and removal'I'have provided anadjustable meansfor securing thei arm or'blade 10 to the ways25 usuallyprovided upon the lower side of the'feeding-ta-g Located upon't'neuppe-rsid-e of the! arm is a stationary clamping-flange 26, cn-l gagingthe forward edge of the guide, and a5 movable clamping block orplate'27, engag-E ingthe opposite side of said guide is provided; with ascrew or stud 28, operating through; an elongated aperture 29 in thearm, andjis engaged ina cam-slot 30, formed upon one; end of abell-crank lever 31 pivoted at'32;

and provided with an operating knob orhandle 33. Asmall point orprojection 34:, formed upon the inner side of the lever-arm and adaptedto engage with depressions or recesses 35 in the proximate face of thesupport, serves to hold the clamp in adjusted position. A thumb-screw 36in the rear end of the arm or blade and adapted-to engage the lower sideof the table permits the opposite end of the blade and the cutter to beadjusted relative to the face of the drum or cylinder 2, the connectionbetween the arm or blade and the feeding-table being-sufficiently looseto permit this.

InFig. 7 I have shown a modification in which the connection between thedrivingwheel and rotary cutter is accomplished by means of a belt 40,extending around the face of the former and over a hub or-pulley 41-0nthe latter, and in said figure is also shown a small roller 42, thesurface of which may be either plain or provided with an annulargroovein-\vhich.tlie.edge of the cutter operates' The device as a whole issimple and compactand is capable of being easily applied or removed.They may be used either singly ,orseveral.maybeprovided upon a press,and "by its attachment to the table the sheets are slit one at a time asthey are fed into the press and while:held and drawn by the grippers onthe cylinder, insuring the paper being properly out upon a true line,making a subsequent cutting (or itrimm'ing operation unnecessary.

As the cutters or slitting attachments are secured to the feed-board orto any other equivalent support,-they-maybe readily removed'from-a'bovethe cylindei for the purpose of adjustment or inspection when desired.

The cutter might'be rotated by the'direct contact with-thepaper alone,and this, in connection with the crowning paper-supportbeneath it,wouldbeadvantageous; but I prefer -in-practice to drive the cutterpositively-in-the manner shown.

I claim as my'i-nrention 1. Ina-paper -slitter,'the combination with asupport over which the paper may be passed of arrotary cutting-knife, adriving-wheel en- 1 gaging the face of the'paper and operated by themovement of the latter and operating connections between said wheel andcutter.

2. In a paper-slitte-r,-the combination with asupport over which thepaper maybe passed, of arotary cutting-knife,a wheel tricl ionallyengaging the paper and driving connections between the wheel andcutterto cause'the operation of the latter in'the direction of-movementof-said paper.

3. In a paper-slitter, the combination with a support over which a sheetof paper may be ipassed of a rotary cutter, a wheel adaptedto 'beoperated'by' frictional engagement with the face of the paper, andconnections between the wheel and cutter for causing the opera- :tion ofthe latter at an increased su rface speed relative to that ofthe paperand'in the direction of its movement.

4:. In apaper-slitting device, the combination withasupport, a rotarycutter, and means for adjusting the'latter relative-to the support, of awheel adapted to be operated by the paper as it is moved across thesupport and driving connections between the wheel and cutter.

5. In-a-paper-slitting device, the combination-with a support, a rotarycutter and means 'for adjusting the latter relative to the support, of adriving-wheel adapted to'be operated by the paper as it is'moved overthe support, means for adjusting the wheel relative to the supportand'independently of-the cutter, and operating-connections between thedriving-wheel and cutter.

'6. In a paper-slitting device,-the combination with a support, a rotarycutteiyand means for adjusting the latter relative to the sup- IIO port,of a driving-wheel, means for yieldingly supporting the wheel in contactwith a sheet of paper as it is passed over the support, an adjustingmechanism for adjusting the wheel relative to the support and drivingconnec" tions between the wheel and cutter.

7. A paper-slitting device embodyingasupport, a rotary cutter, adriving-wheel connected thereto, an adjusting mechanism for adjustingthe wheel and cutter relative to the support and tension devices forholding the driving-wheel in yielding contact with a sheet of paperpassed over the support.

8. In a paper-slitting device, the combination with a paper-support, arotary cutter, a pivoted supporting-arm carrying the cutter and meansfor adjusting the arm to vary the position of the cutter relative to thesupport, of an adjustable driving-wheel operating over thepaper-support, and a spring for operating the wheel toward the latter.

9. A slitting attachment forprintingpresses embodying a blade extendingover the presscylinder, a cutter supported on the blade and cooperatingwith the latter to sever the paper drawn between them.

10. A slitting attachment for printingpresses embodying a blade adaptedto extend over the press-cylinder having the crowning surface and thedepression or recess, and a rotary cutter supported above the blade andoperating in the depression in the latter to sever the paper drawnbetween them.

11. A slitting attachment for printingpresses embodying a blade adaptedto extend over the press-cylinder having the crowning surface and thedepression or recess, and the rotary cutting-disk mounted on the bladeoperating in the recess and rotated by the paper drawn between the bladeand disk.

12. A slitting attachment for printingpresses embodying a blade adaptedto extend over the press-cylinder having the crowning surface and thedepression or recess, the cutter operating in the recess and a drivingwheel connected to the cutter and operated to drive the latter bycontact with the moving paper.

13. A slitting attachment for presses embodying a blade or support, anarrow standard thereon, and a cutter supported on the standard,cooperating with the support to sever the paper and means for adjustingsaid cutter toward and from the support.

14. A slitting attachment for presses embodying a blade or support, anarrow standard thereon a rotary cutter journaled on the standard andcooperating with the support to sever the paper, and a driving-wheel inadvance of the cutter and connected to the latter to rotate it.

15. A slitting attachment for presses embodying a blade or support, anarrow standard thereon, a rotary cutterjournaled on the standard andcooperating with the support to sever the paper, a frame movablysupported on the standard, a spring for moving the frame toward thesupport and a driving-wheel on the frame connected to the cutter torotate it.

16. A slitting attachment for presses embodying a support, a rotarycutter cooperating with the latter to sever the paper drawn betweenthem, and a separate independentlyyielding driving-wheel connected tothe cutter and between which and the support the paper is moved.

17. A slitting attachment for presses embodying a blade or supportadapted to extend over a press-cylinder, a rotary cutter codpcratingtherewith and a driving-wheel located in advance of the cutter andconnected to the latterfor operatingit, said wheel being driven by thepaper moving beneath it.

18. The combination with a press having a cylinder and grippers thereon,of a slitting attachment embodying a blade or support'extending over thecylinder between the grippers having a cutter thereon cooperating withthe blade to sever the paper held upon the cylinder by the grippers.

19. The combination with a press having a cylinder and grippers thereon,and a feedboard, of a slitting device embodying a blade or supportsecured to the feed-board and extending over the cylinder, a cutterarranged upon the blade or support and cooperating with the latter tosever the paper held by the grippers.

JOHN F. FROMM.

Witnesses:

F. F. CHURCH, G. WILLARD RICH.

